Ningbo Hyuan Power Industry Co., Ltd.  

Product Name: 33kv/72.5kv/110kv/145kv Outdoor Live Tank Vacuum Circuit Breaker Model NO.: ZW Certification: ISO9001-2000 Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, OVP(Overvoltage Protection) Type: Circuit Breaker Poles Number: 3 Structure: Live Tank Installation: Outdoor Arc-extinguishing Medium: Vacuum Speed: High-Speed Circuit Breaker Operation: Electric Type Breaking Capacity: High Voltage Circuit Breakers Trademark: HEMG Transport Package: Carton with Wooden Specification: 33KV/72.5KV/145KV, 50HZ/60HZ/1250A TO 3150A Origin: China Product Description ZW-33KV/72.5KV/145KV series of outdoor high voltage vacuum circuit breakerGeneral Description:ZW series of vacuum circuit breakers are three-phase, A.C 50Hz/60HZ outdoor high voltage distribution equipment with 33KV/72.5KV/145KV rated voltage, which can be used to open or close loading current, over-loading current and short-circuit current. ZW series of vacuum circuit breakers possess reasonable designing construction, convenient maintenance, With current transformer (current ratio: 100:5 H 200:5 H 400:5 H 1000:5 H 1600:5), and it is equipped with four coils for each phase used for measurement and protection. The operating mechanism is CD10-III type electric magnetic operating mechanism.Applying ambient conditions:1. The height above the sea level should be no higher than 4500m.2. Ambient temperature: The max. temperature should be +40ºC. The min. temperature should be -30ºC.3. The wind pressure should be no more than 700Pa (equals to wind speed of 34m/s).4. Earthquake intensity should be no more than 8 degree.5. The degree of air-filth should be III class.Specification sheet :NameUnitDataRated VoltagekV35Rated currentA1250 1600 2000Rated frequencyHz50Rated power frequency withstand voltage(1min)kV95Rated short time withstand currentkA<20Rated withstand current(peak)kA<50Rated short-circuit breaking currentkA25 31.5Rated short-circuit making currentkA63 80Rated lighting impulse withstand voltagekA185Rated duration of short circuitS4Operating cycles at rated short-circuit breaking currentCycles12(8)Mechanism enduranceCycles6000 10000Closing timems<150Opening timems<60Overall dimension (Width X Depth X Height)mm2335 X 500 X 2275Rated operating voltage and rated voltage of auxiliary circuitVA.C 220V,110V D.C 220V,110The Construction Characteristics:Zw series of vacuum circuit breakers are mainly made up of vacuum interrupters, current transformer, actuator and electric magnetic operating mechanism. The overall construction is adopted insulating bottle supporting type. The vacuum interrupter is mounted in the upper insulating bottle, and between them, a new kind of insulating material is filled, which can solve the problem of condensed water and other problems caused by filled gas or filled oil due to good insulating property, durability and resistance for outdoor high temperature. The lower insulator bottle is used to support the vacuum interrupter. Three-phase insulating bottles are mounted on the waterproof mechanism box, in which a heater is equipped for protecting the electric control component against damp.